CN107452345A - A kind of display device luminance compensation method, device and display device - Google Patents
A kind of display device luminance compensation method, device and display device Download PDFInfo
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- CN107452345A CN107452345A CN201710911573.3A CN201710911573A CN107452345A CN 107452345 A CN107452345 A CN 107452345A CN 201710911573 A CN201710911573 A CN 201710911573A CN 107452345 A CN107452345 A CN 107452345A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/141—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light conveying information used for selecting or modulating the light emitting or modulating element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
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Abstract
The invention provides a kind of display device luminance compensation method, device and display device, including：Obtain the ambient temperature information and display data information of the display device；Determine the display device, the ambient temperature information and the display data information, corresponding compensated information；The backlight drive signal of the display device and/or the display data information are compensated according to the compensated information, to adjust the brightness of the display device, so as to solve the problems, such as liquid crystal module brightness disproportionation in the prior art.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of display device luminance compensation method, device and display
Device.
Background technology
In display technology field, the display quality of image is the one of which index for judging display device performance, high-quality
It is target that each producer is pursued always that image, which is shown,.At present, large display device is realized, it is non-also to there is display in terms of brightness
The problem of uniformity.The heterogeneity that brightness is shown, mainly due to thin film transistor (TFT) (Thin in backboard
FilmTransistor, TFT) the backlight that provides of the backlight module that electric property is uneven and liquid crystal display panel back is set
Caused by uneven two aspect.
At present, continued to optimize with the progress liquid crystal display performance in epoch, from technology trends for, how to reduce
The power consumption of backlight most attracts attention.At present, it is applied to using backlight drive Local Dimming in backlight design, controls backlight
Brightness, so as to realize reduce power consumption and lifted contrast purpose.Although the bright of backlight can be carried out using backlight drive
The problem of spending adjustment, but still having liquid crystal module brightness disproportionation.
The content of the invention
The invention provides a kind of display device luminance compensation method, device and display device, to solve in the prior art
The problem of liquid crystal module brightness irregularities.
In order to solve the above problems, the invention discloses a kind of display device luminance compensation method, including：
Obtain the ambient temperature information and display data information of the display device；
Determine the display device, the ambient temperature information and the display data information, corresponding compensated information；
The backlight drive signal of the display device and/or the display data information are carried out according to the compensated information
Compensation, to adjust the brightness of the display device.
Preferably, display device, the ambient temperature information and the display data information are determined described, corresponded to
Compensated information before, in addition to：
The corresponding relation established between display device, ambient temperature information and display data information and compensated information, and carry out
Storage；
The ambient temperature information for determining the display device and the display data information, corresponding compensation letter
Breath, including：
According to the pre-stored corresponding relation, the display device, the ambient temperature information and the display are searched
Compensated information corresponding to data message.
Preferably, the corresponding relation established between display device, environment temperature and display data information and compensated information,
Including：
It is determined that demarcation brightness value of the test grey decision-making of test display device at a temperature of demarcation；
Obtain the test brightness value of the test grey decision-making of the test display device at test temperature；
According to the demarcation brightness value and the ratio of the test brightness value, the survey of the test display device is determined
Try grey decision-making corresponding test offset under the test temperature；
According to the test display device, the test grey decision-making, the test temperature and the corresponding test compensation
Value, determines the corresponding relation；
Wherein, the display data information of the test display device includes the test grey decision-making.
Preferably, the display data information for obtaining the display device, including：
Obtain the grey decision-making of each pixel of the display device；
The grey decision-making of each pixel is weighted, obtains the grey decision-making of the display device, as described aobvious
Show the display data information of device.
Preferably, the display device division has multiple viewing areas；The display data for obtaining the display device
Information, including：
Obtain the grey decision-making of each pixel in the viewing area；
The grey decision-making of each pixel in the viewing area is weighted, obtains the grey decision-making of the viewing area；
The grey decision-making of each viewing area is defined as to the display data information of the display device.
Preferably, it is described according to backlight drive signal of the compensated information to the display device and/or the display
Data message compensates, including：
According to the backlight corresponding with each viewing area of compensated information pair corresponding to the grey decision-making of each viewing area
Drive signal and/or the display data information compensate.
Preferably, the ambient temperature information for obtaining the display device, including：
The ambient temperature information for the display device that temperature sensor uploads is received, the temperature sensor is arranged on institute
State on display device and close to the position of liquid crystal layer.
In order to solve the above problems, the invention also discloses a kind of display device luminance compensating mechanism, including：
Acquiring unit, for obtaining the ambient temperature information and display data information of the display device；
Determining unit, it is corresponding for determining the display device, the ambient temperature information and the display data information
Compensated information；
Luminance compensation unit, for according to backlight drive signal of the compensated information to the display device and/or institute
State display data information to compensate, to adjust the brightness of the display device.
Preferably, also include before the determining unit：Compensation relationship unit, the compensation relationship unit are used to establish
Corresponding relation between the display device, the environment temperature and the display data information and compensated information, and stored；
The determining unit includes searching modul, and the searching modul is used for what is be pre-stored according to the compensation relationship unit
The corresponding relation, search compensation letter corresponding to the display device, the ambient temperature information and the display data information
Breath.
Preferably, the compensation relationship unit includes：
Demarcating module, for determining demarcation brightness value of the test grey decision-making of test display device at a temperature of demarcation；
Test module, it is bright for obtaining the test of the test grey decision-making of the test display device at test temperature
Angle value；
Compensating module, for according to the demarcation brightness value and the ratio of the test brightness value, determining that the test is aobvious
Show the test grey decision-making of the device corresponding test offset under the test temperature；
Corresponding relation module, for according to the test display device, the test grey decision-making, the test temperature and right
The test offset answered, determines the corresponding relation, wherein, the display data information of the test display device includes institute
State test grey decision-making.
Preferably, the acquiring unit is used for the display data information for obtaining the display device, including：
First acquisition module, for obtaining the grey decision-making of each pixel of the display device；
First weighting block, for the grey decision-making of each pixel to be weighted, obtain the display device
Grey decision-making, the display data information as the display device.
Preferably, the display device division has multiple viewing areas；The acquiring unit is used to obtain the display
The display data information of part, including：
Second acquisition module, for obtaining the grey decision-making of each pixel in the viewing area；
Second weighting block, for the grey decision-making of each pixel in the viewing area to be weighted, described in acquisition
The grey decision-making of viewing area, the grey decision-making of each viewing area is defined as to the display data information of the display device.
Preferably, the luminance compensation unit is specifically used for compensating letter according to corresponding to the grey decision-making of each viewing area
Breath pair compensates with each corresponding backlight drive signal in viewing area and/or the display data information.
Preferably, the acquiring unit is used for the ambient temperature information for obtaining the display device, including：
The ambient temperature information for the display device that temperature sensor uploads is received, the temperature sensor is arranged on institute
State on display device and close to the position of liquid crystal layer.
In order to solve the above problems, the invention also discloses a kind of display device, including any one of claim 8-14
Described display device luminance compensating mechanism.
Compared with prior art, the present invention includes advantages below：
The present invention obtains the ambient temperature information of display device and display data is carried out, and determines the display device, described
Ambient temperature information and the display data information, corresponding compensated information；According to the compensated information to the display device
Backlight drive signal and/or the display data information compensate, to adjust the brightness of the display device, the present invention examines
Influence of the ambient temperature information to display device is considered, has been determined by the ambient temperature information and display data information of display device
Compensated information, so as to realize under different temperatures, the brightness to display device is adjusted, and avoids liquid crystal layer easily by temperature shadow
Ring, and the problem of display device brightness disproportionation occur.
Certainly, any product for implementing the present invention is not necessarily required to reach all the above advantage simultaneously.
Brief description of the drawings
Fig. 1 is a kind of flow chart of display device luminance compensation method described in the embodiment of the present invention one；
Fig. 2 is schematic diagram of the inventive display part in each viewing area grey decision-making；
Fig. 3 is schematic diagram of another display device of the invention in each viewing area grey decision-making；
Fig. 4 is the schematic diagram of brightness value corresponding to each viewing area grey decision-making of inventive display part；
Fig. 5 is the schematic diagram for the compensated information that the present invention is found according to corresponding relation；
Fig. 6 is a kind of structured flowchart of display device luminance compensating mechanism described in the embodiment of the present invention two.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
Embodiment one
Reference picture 1, it illustrates a kind of flow chart of display device luminance compensation method described in the embodiment of the present invention one.
Step 101：Obtain the ambient temperature information and display data information of the display device.
By setting temperature sensor to obtain the ambient temperature information of display device, temperature sensor can be arranged on liquid crystal
It on module backboard, can also be arranged on the drive circuit of liquid crystal module, can also be set directly at by liquid crystal module, can be with
It is arranged on the display device and close to the position of liquid crystal layer, this present invention is not particularly limited.
Display device provided in an embodiment of the present invention can be liquid crystal display device, or organic luminescent device etc.
Deng.
In specific implementation, the ambient temperature information for obtaining the display device includes：Receive on temperature sensor
The ambient temperature information of the display device passed, the temperature sensor are arranged on the display device and close to liquid crystal layers
Position.
Display data information can be by the picture and picture library of external image system acquisition or camera shooting
Picture of acquisition etc..
In specific implementation, the display data information for obtaining the display device, including：
Obtain the grey decision-making of each pixel of the display device.
Generally we have seen that the image that shows of display device on a little by three sub-pix grous of red, green, blue into often
The light source of one sub-pix behind can show different gray scales, and grey decision-making represents brightness by most bright to most dark difference
Stratum level, the picture effect that level to be shown are thinner.For example, 256 luminance levels are referred to as 256 grey decision-makings, on image
Each point color change represent by form this point three sub-pixs grey decision-making change.
The grey decision-making of each pixel is weighted, obtains the grey decision-making of the display device, as described aobvious
Show the display data information of device.
The display data information of whole display part can be obtained in actual applications, a kind of mode, obtain display device
The grey decision-making of each pixel, the grey decision-making of each pixel is weighted, obtains the grey decision-making of the display device, as
The display data information of the display device.Another way is the grey decision-making of each pixel of display device to be obtained, to each picture
The grey decision-making of element carries out arithmetic average calculating, obtains the grey decision-making of the display device, the display as the display device
Data message.
Multidomain treat-ment can also be carried out to display device in actual applications, then calculate the grey decision-making of each subregion, will
Display data information of the grey decision-making of each subregion as display device, specifically, a kind of mode is：The display device division
There are multiple viewing areas；Obtain the grey decision-making of each pixel in the viewing area；To the GTG of each pixel in the viewing area
Value is weighted, and obtains the grey decision-making of the viewing area；The grey decision-making of each viewing area is defined as the display
The display data information of part.Another middle mode, the display device division have multiple viewing areas；Obtain in the viewing area
The grey decision-making of each pixel；Arithmetic average calculating is carried out to the grey decision-making of each pixel in the viewing area, obtains the display
The grey decision-making in region；The grey decision-making of each viewing area is defined as to the display data information of the display device.
Step 102：Establish display device, ambient temperature information and display data information pass corresponding between compensated information
System, and stored.
Different display device, because circuit design and liquid crystal model etc. have difference, therefore by varying environment temperature
When degree influences, the brightness that the change of its response speed will also result in display device changes, thus needs to pass through test data
Analysis, the corresponding relation being previously obtained between display device, environment temperature and display data information and compensated information, and deposited
Storage.
In specific implementation, corresponding relation can be stored in micro-control unit (Microcontroller Unit；
MCU), also known as one chip microcomputer (Single Chip Microcomputer) or single-chip microcomputer is in itself, can also be stored in
In memory in MCU, this present invention is not particularly limited.
It is described to establish between display device, environment temperature and display data information and compensated information as a kind of implementation
Corresponding relation, including：
It is determined that demarcation brightness value of the test grey decision-making of test display device at a temperature of demarcation.
Obtain the test brightness of the test grey decision-making of the test display device at test temperature.
According to the demarcation brightness value and the ratio of the test brightness value, the survey of the test display device is determined
Try grey decision-making corresponding test offset under the test temperature.
According to the test display device, the test grey decision-making, the test temperature and the corresponding test compensation
Value, determines the corresponding relation.
Wherein, the display data information of the test display device includes the test grey decision-making.
Step 103：Determine the display device, the ambient temperature information and the display data information, corresponding benefit
Repay information.
In actual applications, the ambient temperature information for determining the display device and display data letter
Breath, corresponding compensated information, including：
According to the pre-stored corresponding relation, the display device, the ambient temperature information and the display are searched
Compensated information corresponding to data message.
Step 104：According to backlight drive signal of the compensated information to the display device and/or the display data
Information compensates, to adjust the brightness of the display device.
Compensated information includes penalty coefficient.Penalty coefficient is determined by following steps：
First, display device division there are into multiple viewing areas, using brightness measurer in the test display device
Light emission side, which measures and records display display data information, is respectively testing grey decision-making and test GTG corresponding to each viewing area
The brightness value of value at test temperature.I.e. display device light after brightness value.
The brightness measurer can be any measuring instrument that can measure pixel scale brightness, such as can be shooting
Machine.During the gray scale picture of camera acquisition liquid crystal display panel, the resolution ratio of video camera and the resolution ratio phase of liquid crystal display panel
During analogy, the brightness value of collection is more accurate.
It should be noted that display device can be divided into multiple viewing areas in the form of decile, can also be with non-etc.
Form-separating divides viewing area, and this present invention is not particularly limited.
Secondly, the brightness value under each viewing area test temperature and the demarcation brightness value at a temperature of demarcation are compared
Compared with, using ratio as each viewing area the corresponding penalty coefficient under the test temperature.
Such as：The test grey decision-making of display device is L125, and the temperature of demarcation is 25 DEG C, corresponding at a temperature of the demarcation
Demarcation brightness value be 600nit, if now the temperature of display device be -20 DEG C, corresponding brightness value is at a temperature of -20 DEG C
400nit, it is that penalty coefficient is 1.5 by function f1 (- 20 DEG C, L125)=600/400=1.5, when display device is -20 DEG C
Backlight is promoted to 1.5 times of original luminance so that under display device different temperatures, the brightness of display device is the same.
It is specifically, described according to backlight drive signal of the compensated information to the display device and/or the display
Data message compensates, including：
According to the backlight corresponding with each viewing area of compensated information pair corresponding to the grey decision-making of each viewing area
Drive signal and/or the display data information compensate.
Backlight drive signal corresponding to each viewing area is entered according to penalty coefficient corresponding to the grey decision-making of each viewing area
Row compensation, so as to adjust the brightness of each viewing area.According to compensated information corresponding to the grey decision-making of each viewing area to viewing area
Display data information compensates corresponding to domain.
By experiment, it is found that its brightness of same gray level value different temperatures is different, if being intended to grey decision-making under its different temperatures
It is identical, then constantly to change its grey decision-making, then can be drawn the grey decision-making of each pixel of each display device not according to experimental data
Synthermal lower corresponding grey decision-making, when the temperature is changed, then need each pixel gray level value according to the penalty coefficients of different grey decision-makings
The grey decision-making being adjusted under relevant temperature, display data information corresponding to viewing area is compensated so as to realize.
Backlight drive signal corresponding to viewing area is carried out according to compensated information corresponding to the grey decision-making of each viewing area
Compensation.
In actual applications, can according to corresponding to the grey decision-making of each viewing area penalty coefficient pair with it is described each aobvious
Show that backlight drive signal corresponding to region and the display data information compensate.It can also determine in each viewing area most
Big grey decision-making, the brightness in each viewing area is compensated according to penalty coefficient, so as to which the brightness reached to display device is mended
Repay.
The embodiment of the present invention, carried out, determined described aobvious by the ambient temperature information and display data that obtain display device
Show device, the ambient temperature information and the display data information, corresponding compensated information；According to the compensated information to institute
The backlight drive signal and/or the display data information for stating display device compensate, to adjust the bright of the display device
Degree, the present invention consider influence of the ambient temperature information to display device, ambient temperature information and display by display device
Data message determines compensated information, and so as to realize under different temperatures, the brightness to display device is adjusted, and avoids liquid crystal layer
Easily it is affected by temperature, and the problem of display device brightness disproportionation occurs.
Further, in order to which those skilled in the art are better understood from the technical scheme of the invention limited, referring to Fig. 2-5 show
The example of the invention applied.
Such as：Assuming that applying this scheme on the display device that one is 8bit, and display device is divided into 9 displays
Region.
(1) 9 viewing areas of hypothesis is single grey decision-making, and the grey decision-making is L125, as shown in Figure 2.
(2) viewing area shown in Fig. 2, if not considering the change of temperature, when temperature changes, each of which viewing area
Grey decision-making will produce change, although as shown in figure 3, grey decision-making is changed, but each area of the prior art
The brightness value in domain is also no variation in, such as：Brightness is 1, as shown in figure 4, being so easy for display device brightness disproportionation occur
The problem of.
(3) the problem of present invention is in order to avoid display device brightness disproportionation, adds temperature sensor measurement display device
The ambient temperature information of each viewing area.
(4) corresponding relation between display device, ambient temperature information and display data information and compensated information is pre-established,
And it is stored in MCU.
Such as：The corresponding relation pre-established is, it is as follows to measure compensated information on the basis of 25 DEG C, at -20 DEG C：L10 is
Compensated information 1.1, L40 are compensated information 1.1, and L80 is compensated information 1.1, and L110 is compensated information 1.2, and L127 believes for compensation
1.2, L140 of breath is compensated information 1.2, and L170 is compensated information 1.2, and L210 is compensated information 1.3, and L250 compensated informations are
1.3。
(5) after the temperature of each viewing area of display device changes, according to the lookup pair of the corresponding relation of storage
The compensated information answered, the compensated information of lookup are as shown in Figure 5.
(6) according to by the compensated information of each viewing area to the backlight drive signal to the display device and/or institute
State display data information to compensate, to adjust the brightness of the display device so that under display device different temperatures, display
The brightness of part is still the same.
It should be noted that for foregoing embodiment of the method, in order to be briefly described, therefore it is all expressed as a series of
Combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement, because according to
According to the present invention, some steps can use other orders or carry out simultaneously.Secondly, those skilled in the art should also know,
Embodiment described in this description belongs to preferred embodiment, and involved action is not necessarily essential to the invention.
Based on the explanation of above method embodiment, present invention also offers corresponding device embodiment, to realize above-mentioned side
Content described in method embodiment.
Embodiment two
Reference picture 6, it illustrates a kind of structure chart of display device luminance compensating mechanism described in the embodiment of the present invention two.
The display device luminance compensating mechanism can be specifically micro-control unit (Microcontroller Unit；MCU),
Also known as one chip microcomputer (Single Chip Microcomputer) or single-chip microcomputer in itself or is arranged on MCU
It is internal or external, it can be communicated with MCU, realize control to liquid crystal module or backlight drive circuit etc..
The display device luminance compensating mechanism specifically includes：
Acquiring unit 601, for obtaining the ambient temperature information and display data information of the display device.
Determining unit 602, for determining the display device, the ambient temperature information and the display data information,
Corresponding compensated information.
Luminance compensation unit 603, for according to the compensated information to the backlight drive signal of the display device and/or
The display data information compensates, to adjust the brightness of the display device.
Preferably, also include before the determining unit：Compensation relationship unit, the compensation relationship unit are used to establish
Corresponding relation between the display device, the environment temperature and the display data information and compensated information, and stored.
The determining unit includes searching modul, and the searching modul is used for what is be pre-stored according to the compensation relationship unit
The corresponding relation, search compensation letter corresponding to the display device, the ambient temperature information and the display data information
Breath.
Preferably, the compensation relationship unit includes：
Demarcating module, for determining demarcation brightness value of the test grey decision-making of test display device at a temperature of demarcation.
Test module, it is bright for obtaining the test of the test grey decision-making of the test display device at test temperature
Angle value；
Compensating module, for according to the demarcation brightness value and the ratio of the test brightness value, determining that the test is aobvious
Show the test grey decision-making of the device corresponding test offset under the test temperature.
Corresponding relation module, for according to the test display device, the test grey decision-making, the test temperature and right
The test offset answered, determines the corresponding relation, wherein, the display data information of the test display device includes institute
State test grey decision-making.
Preferably, the acquiring unit is used for the display data information for obtaining the display device, including：
First acquisition module, for obtaining the grey decision-making of each pixel of the display device.
First weighting block, for the grey decision-making of each pixel to be weighted, obtain the display device
Grey decision-making, the display data information as the display device.
Preferably, the display device division has multiple viewing areas；The acquiring unit is used to obtain the display
The display data information of part, including：
Second acquisition module, for obtaining the grey decision-making of each pixel in the viewing area；
Second weighting block, for the grey decision-making of each pixel in the viewing area to be weighted, described in acquisition
The grey decision-making of viewing area, the grey decision-making of each viewing area is defined as to the display data information of the display device.
Preferably, the luminance compensation unit is specifically used for compensating letter according to corresponding to the grey decision-making of each viewing area
Breath pair compensates with each corresponding backlight drive signal in viewing area and/or the display data information.
Preferably, the acquiring unit is used for the ambient temperature information for obtaining the display device, including：
The ambient temperature information for the display device that temperature sensor uploads is received, the temperature sensor is arranged on institute
State on display device and close to the position of liquid crystal layer.
The present embodiment, carried out by the ambient temperature information and display data that obtain display device, determine the display
Part, the ambient temperature information and the display data information, corresponding compensated information；According to the compensated information to described aobvious
The backlight drive signal and/or the display data information for showing device compensate, to adjust the brightness of the display device, this
Invention considers influence of the ambient temperature information to display device, is believed by the ambient temperature information and display data of display device
Breath determine compensated information, so as to realize under different temperatures, the brightness to display device is adjusted, avoid liquid crystal layer easily by
Temperature influences, and the problem of display device brightness disproportionation occurs.
Embodiment three
The invention also discloses the display device luminance compensating mechanism in a kind of display device, including embodiment two.
It should be noted that the display device in the present embodiment can be applied in mobile phone, tablet personal computer, television set, notes
Any product or part with display function such as this computer, DPF, navigator.
The display panel has all advantages of display device luminance compensating mechanism in above-described embodiment two, herein no longer
Repeat.
For said apparatus embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple,
The part explanation of related part embodiment of the method shown in Figure 1.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
It would have readily occurred to a person skilled in the art that be：Any combination application of above-mentioned each embodiment is all feasible, therefore
Any combination between above-mentioned each embodiment is all embodiment of the present invention, but this specification exists as space is limited,
This is not just detailed one by one.
In the present invention, " component ", " device ", " system " etc. refer to the related entities applied to computer, such as hardware, firmly
Combination, software or executory software of part and software etc..In detail, for example, component can with but be not limited to run on place
The process of reason device, processor, object, executable component, execution thread, program and/or computer.Further, server is run on
On application program or shell script, server can be component.One or more assemblies can be in the process and/or line of execution
Cheng Zhong, and component can be localized and/or be distributed between two or multiple stage computers on one computer, and can be by
Various computer-readable medium operations.Component can also be according to the signal with one or more packets, for example, from one
Pass through signal and other systems with another component interaction in local system, distributed system, and/or network in internet and hand over
The signal of mutual data is communicated by locally and/or remotely process.
Finally, it is to be noted that, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between any this actual relation or order be present.Moreover, term " comprising ", "comprising", not only including those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or equipment institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence " including ... ", it is not excluded that including it is described will
Other identical element also be present in the process of element, method, article or equipment.
Moreover, "and/or" above represent both to have contained herein " and " relation, also contains the relation of "or", its
In：If option A and option b be " and " relation, then it represents that option A and option b can be included in certain embodiment simultaneously；If
Option A and the relation that option b is "or", then it represents that can individually include option A in certain embodiment, or individually include option b.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Above to a kind of display device luminance compensation method provided by the present invention, device, display device, carry out in detail
Introduce, specific case used herein is set forth to the principle and embodiment of the present invention, the explanation of above example
It is only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, according to this
The thought of invention, there will be changes in specific embodiments and applications, in summary, this specification content should
It is interpreted as limitation of the present invention.
Claims (15)
- A kind of 1. display device luminance compensation method, it is characterised in that including：Obtain the ambient temperature information and display data information of the display device；Determine the display device, the ambient temperature information and the display data information, corresponding compensated information；The backlight drive signal of the display device and/or the display data information are mended according to the compensated information Repay, to adjust the brightness of the display device.
- 2. according to the method for claim 1, it is characterised in that determine the display device, the environment temperature described Information and the display data information, before corresponding compensated information, in addition to：The corresponding relation established between display device, ambient temperature information and display data information and compensated information, and stored；The ambient temperature information for determining the display device and the display data information, corresponding compensated information, Including：According to the pre-stored corresponding relation, the display device, the ambient temperature information and the display data are searched Compensated information corresponding to information.
- 3. according to the method for claim 2, it is characterised in that described to establish display device, environment temperature and display data Corresponding relation between information and compensated information, including：It is determined that demarcation brightness value of the test grey decision-making of test display device at a temperature of demarcation；Obtain the test brightness value of the test grey decision-making of the test display device at test temperature；According to the demarcation brightness value and the ratio of the test brightness value, determine that the test of the test display device is grey Rank value corresponding test offset under the test temperature；Display device, test grey decision-making, the test temperature and the corresponding test offset are tested according to described, really The fixed corresponding relation；Wherein, the display data information of the test display device includes the test grey decision-making.
- 4. according to the method for claim 3, it is characterised in that the display data information for obtaining the display device, Including：Obtain the grey decision-making of each pixel of the display device；The grey decision-making of each pixel is weighted, obtains the grey decision-making of the display device, as the display The display data information of part.
- 5. according to the method for claim 3, it is characterised in that the display device division has multiple viewing areas；It is described The display data information of the display device is obtained, including：Obtain the grey decision-making of each pixel in the viewing area；The grey decision-making of each pixel in the viewing area is weighted, obtains the grey decision-making of the viewing area；The grey decision-making of each viewing area is defined as to the display data information of the display device.
- 6. according to the method for claim 5, it is characterised in that it is described according to the compensated information to the display device Backlight drive signal and/or the display data information compensate, including：According to the backlight drive corresponding with each viewing area of compensated information pair corresponding to the grey decision-making of each viewing area Signal and/or the display data information compensate.
- 7. method according to any one of claim 1 to 6, it is characterised in that the ring for obtaining the display device Border temperature information, including：The ambient temperature information for the display device that temperature sensor uploads is received, the temperature sensor is arranged on described aobvious Show on device and close to the position of liquid crystal layer.
- A kind of 8. display device luminance compensating mechanism, it is characterised in that including：Acquiring unit, for obtaining the ambient temperature information and display data information of the display device；Determining unit, for determining the display device, the ambient temperature information and the display data information, corresponding benefit Repay information；Luminance compensation unit, for according to the compensated information to the backlight drive signal of the display device and/or described aobvious Show that data message compensates, to adjust the brightness of the display device.
- 9. device according to claim 8, it is characterised in that also include before the determining unit：Compensation relationship list Member, the compensation relationship unit are used to establish the display device, the environment temperature and the display data information and compensation Corresponding relation between information, and stored；The determining unit includes searching modul, and the searching modul is used for according to the compensation relationship unit is pre-stored Corresponding relation, search the display device, the ambient temperature information and compensated information corresponding to the display data information.
- 10. device according to claim 9, it is characterised in that the compensation relationship unit includes：Demarcating module, for determining demarcation brightness value of the test grey decision-making of test display device at a temperature of demarcation；Test module, for obtaining the test brightness of the test grey decision-making of the test display device at test temperature Value；Compensating module, for according to the demarcation brightness value and the ratio of the test brightness value, determining the test display The test grey decision-making of part corresponding test offset under the test temperature；Corresponding relation module, for according to the test display device, the test grey decision-making, the test temperature and corresponding The test offset, determines the corresponding relation, wherein, the display data information of the test display device includes the survey Try grey decision-making.
- 11. device according to claim 10, it is characterised in that the acquiring unit is used to obtain the display device Display data information, including：First acquisition module, for obtaining the grey decision-making of each pixel of the display device；First weighting block, for the grey decision-making of each pixel to be weighted, obtain the GTG of the display device Value, the display data information as the display device.
- 12. device according to claim 10, it is characterised in that the display device division has multiple viewing areas；Institute The display data information that acquiring unit is used to obtain the display device is stated, including：Second acquisition module, for obtaining the grey decision-making of each pixel in the viewing area；Second weighting block, for the grey decision-making of each pixel in the viewing area to be weighted, obtain the display The grey decision-making in region, the grey decision-making of each viewing area is defined as to the display data information of the display device.
- 13. device according to claim 12, it is characterised in that the luminance compensation unit is specifically used for according to each described The backlight drive signal corresponding with each viewing area of compensated information pair corresponding to the grey decision-making of viewing area and/or described aobvious Show that data message compensates.
- 14. according to the device any one of claim 8-13, it is characterised in that the acquiring unit is described for obtaining The ambient temperature information of display device, including：The ambient temperature information for the display device that temperature sensor uploads is received, the temperature sensor is arranged on described aobvious Show on device and close to the position of liquid crystal layer.
- 15. a kind of display device, including the display device luminance compensating mechanism any one of claim 8-14.
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| CN201710911573.3A CN107452345B (en) | 2017-09-29 | 2017-09-29 | Display device brightness compensation method and device and display device |
| US16/146,832 US10657905B2 (en) | 2017-09-29 | 2018-09-28 | Method and apparatus for compensating for brightness of display device |
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| CN201710911573.3A CN107452345B (en) | 2017-09-29 | 2017-09-29 | Display device brightness compensation method and device and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20190103062A1 (en) | 2019-04-04 |
| CN107452345B (en) | 2020-01-10 |
| US10657905B2 (en) | 2020-05-19 |
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